What is the atomic number of this element?

What Is The Atomic Number Of This Element?

Answers

Answer 1

Answer:

27

Explanation:


Related Questions

How many elements are artificially made?

Answers

Answer:

May be 119 elements are artificially made.

Answer:

119 elements are artificially made...

Which statement discribes a gas?

Answers

Answer:

There's no statement...

chlorine is more reactive than sulphur​

Answers

Answer:

this is true

Explanation:

chlorine only needs to lose one electron to become stable and sulphur needs to lose two

Determine the number of grams in each of the quantities

1.39.0 x 1024 molecules Cl2

Answers

Mass of Cl₂ : 164.01 g

Further explanation

A mole is a number of particles(atoms, molecules, ions)  in a substance

This refers to the atomic total of the 12 gr C-12  which is equal to 6.02.10²³, so 1 mole = 6.02.10²³ particles  

Can be formulated :

N = n x No

N = number of particles

n = mol

No = 6.02.10²³ = Avogadro's number

mol Cl₂ :

[tex]\tt n=\dfrac{N}{No}\\\\n=\dfrac{1.39.10^{24}}{6.02.10^{23}}\\\\n=2.31[/tex]

mass Cl₂(MW=71 g/mol) :

[tex]\tt mass=mol\times MW\\\\mass=2.31\times 71=164.01[/tex]

Answer:

hui

Explanation:

ASAP pleaseeeeeeeeeeeeeeeeeeeeeee and Thankyou​

Answers

Answer: Mother has bb. Father has Bb.

Top left box= Bb
Top right box=bb
Bottom left box= Bb
Bottom Right box=bb

Why?
Mother has little b’s because the dominant trait would B would over power the b and give her browns eyes but she has blue so the answer is bb

Father has Bb because he has brown eyes and it says they are heterozygous meaning that he has a both the Dominant and recessive gene.

I hope this helped you :D

Releases energy in the form of ATP
Stores energy in glucose molecules.
Perfomed by producers
Perfomed by consumers.

Answers

Explanation:

Both (Photosynthesis and Cellular respiration)

Because

In Cellular respiration energy is released in the form of ATP and In plants glucose stored in the form of energy. Plants are producers. Animals are consumers.

Therefore,

Both is correct✔

What are the states of matter in precipitation?
Thank you! Have a nice day!

Answers

There can be two, solid (Hail) and liquid (Water).

Answer:

liquid and solid

liquid- rain

solid- hail and snow

I don't know about gas; probably not.

I need help on either question you can answer. Thank you god bless

Answers

Further explanation

1.Atomic Number (Z) = Mass Number (A) - Number of Neutrons

neutrons = mass number-atomic number

Atomic mass Cl-37= 17

Mass number Cl-37=37

Neutrons = 37-17=20

2. Mass atom X = mass isotope 1 . % + mass isotope 2.%...

[tex]\tt atomic~mass~X=0.0224\times 88+0.7832\times 90+0.1944\times 91=90.1[/tex]

3. The energy in one photon can be formulated as

[tex]\large{\boxed{\bold{E\:=\:h\:.\:f}}}[/tex]

f = c / λ, so :

[tex]\tt E\approx f\approx \dfrac{1}{\lambda}[/tex]

Energy is directly proportional to frequency and inversely proportional to the wavelength

So, as the frequency of photon increases, the energy of photon increases

4. Based on answer number 3 :

A. The wavelength becomes longer, and the energy decreases

The PC modem was invented in what year?​

Answers

Answer:

1977

Explanation:

Getting connected: a history of modems. Then, in 1977, Dale Heatherington and Dennis Hayes created the world's first PC modem, the 80-103A.

How much of the protein consumed by humans around the world is fish?
O5 percent
O 20 percent
O 40 percent
O 50 percent

Answers

The answer is option 2, (20 percent)

Hope this help

In an ecosystem, 20 percent of the protein consumed by humans around the world is fish.

What is an ecosystem?

An ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the ecosystem through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the ecosystem .Living organisms also influence the quantity of biomass which is present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

Learn more about ecosystem,here:

https://brainly.com/question/13979184

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BRAINLIEST!!!!!! PLEASE HELP ASAP!!!!!! PLEASE ANSWER THESE!!!!! PLEASE DON'T SPAM!!!!!.​

Answers

Answer:

Explanation: wht do i do??

I was named after the man that developed the periodic table.

Einsteinium


Moscovium


Mendelevium

Lawrencium

Answers

Einsteinium
I hope that helps

Answer: Mendelevium

Explanation:

if there are 365 grams of NaCl, how many grams of sodium are there?

Answers

Answer: Molar mass is the amount grams that one mole weighs.

Explanation: You need to find the molar mass of NaCl which is the same as the amu on the periodic table in grams. So it is 22.99(Na) + 35.45(Cl) = 58.44

You also know that for every mole of NaCl you have 1 mole of Na because every molecule of NaCl has 1 atom of Na.

Finally, using the periodic table, again, you see that the molar mass of Na is 22.99.

Then using stoichiometry, you can find the grams of sodium.

100(g NaCl) * 1 mol (NaCl)/58.44 g (NaCl) * 1 mol (Na)/ 1 mol (NaCl) * 22.99 (g of Na)/ 1 mol (Na)

which equals 39.339435 g of Na.

If you need to maintain significant figures the answer will be 40.

PLEASE HELP ASAP I LOVE YOU ILL GIVE YOU BRAINLY

Answers

Answer:The average atomic mass of an element is the sum of the masses of its isotopes, each multiplied by its natural abundance (the decimal associated with percent of atoms of that element that are of a given isotope).

Explanation:try to find what i ment and  think you will get the answer

Answer:

I think the answer is b or d

Explanation:

I THINK IS THE KEY WORD HERE

At extremely cold temperatures, processes stop. Which Law of Thermodynamics addresses this?

Answers

Answer:

The Second Law

Explanation:

How many grams are in 2.190mol Mg2(SO4)3?

Answers

Mass MgSO₄ = 262.8 g

Further explanation

Given

2.190 mol MgSO₄

Required

mass

Solution

The molecular formula should be MgSO₄

So MW MgSO₄ :

= Ar Mg + Ar S + 4. Ar O

= 24 + 32 + 4. 16

= 120 g/mol

Mass MgSO₄ :

[tex]\tt mass=mol\times MW\\\\mass=2.19\times 120\\\\mass=262.8~g[/tex]

Do electrons have psrticle nature or wave nature?​

Answers

Explanation:

they have wave nature

its correct answer


1. How much heat is required to heat 22 grams of Aluminum from 15 °C to 49° C

Answers

Answer:

670.956

Explanation:

You can use this equation to solve for heat :

Q = m * c * ΔT

Q represents the heat

m represents the mass in kilograms

c is the specific heat. For aluminum, it's 897

ΔT is the change in temperature, so, 49 - 15 which is 34

Plug in the numbers and you get this :

Q = 0.022 * 897 * 34

Q = 670.956 Joules

Pan of water sitting outside during a hot sunny day. The temperature of the water goes up. What type of heat transfer causes the temperature to go up?

Answers

Answer: Convection

Explanation:

I hope this helps :D

Answer:

Radiation

Explanation:

It said that was the answer on the test.

 

A pan of water is sitting outside during a hot sunny day. The temperature of the water goes up. What type of heat transfer caused the temperature to go up?

conduction

induction

Incorrect: convection

Correct: radiation

It takes 7.21 1019 J of energy to remove an electron from an iron atom. What is the maximum wavelength of light that can do this

Answers

Answer:

2.75 × 10^-45 m

Explanation:

From;

E= hc/wavelength

h= Plank's constant= 6.6 × 10^-34 Js

c= speed of light=3× 10^8 ms-1

Wavelength = 6.6 × 10^-34 × 3× 10^8/7.21 × 10^19

Wavelength= 2.75 × 10^-45 m

Suppose you pour a glass of ice water and set it on the kitchen table. After a few minutes, the outside of the glass will be covered with drops of water. Why did this happen?

Answers

Water vapor in the air cooled and condensed onto the cold glass.

For condensation to take place there should be noticeable difference between the temperature of the system and the atmosphere. Thus condensation is the reason for clinging of water particles to the side of the glass.

What is condensation?

Condensation is a process in which the vapor state converts to liquid state. Condensation is the reverse process of evaporation. Condensation occur at dew point. Dew point is the temperature at which condensation starts.

When the hot air particles collides with the surface of the glass having ice water, then the hot particles that had so much energy or kinetic energy suddenly reduces its energy and converts to water due to the change in temperature and pressure .

Thus condensation is the reason for clinging of water particles to the side of the glass having ice water.

To know more about condensation, here:

https://brainly.com/question/20309509

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What is the formula for volume of a rectangular solid?
1.)length x width x height
2.) 1/2 length x width x height
3.)1/2 base x height
4.) length x width​

Answers

Answer:

1. length x width x height

Answer:

1st.

thats the one for u to choose

In an experiment, what responds to the change of the independent variable?

Answers

Answer:

Independent Variable

Explanation:

The central atom in PbSO4 is..............???????

Answers

Answer:

The central atom is S.

Explanation:

Look at the structure.

Which substance in this redox reaction is the oxidizing agent?

Answers

The correct answer is B

What is the ion #for lodine (l)?

Answers

Answer:An iodide ion is the ion I−. Compounds with iodine in formal oxidation state −1 are called iodides. This page is for the iodide ion and its salts, not organo iodine compounds. In everyday life, iodide is most commonly encountered as a component of iodized salt, which many governments mandate.

brainliest pls

A single atom of an element has 21 neutrons, 20 electrons, and 20 protons, which elementis it?

Answers

Answer:

Calcium

Explanation:

The number of protons is the atomic number of the element. Number 20 on the periodic table is Calcium.

Which two options
are
examples of chemical changes?

Answers

Where are the options?




But some examples of chemical changes are:
Burning
Change in color
Change in temperature
Noticeable odor

........URGENT PLEASE HELP............

Answers

Answer:

12.0778

Explanation:

Can someone help me please!

Answers

Answer:

It tells you on the chart I've attached. It's all color coded. :p

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